[PATCH] sound: atom: fix a missing check of snd_pcm_lib_malloc_pages

[Kangjie Lu]

snd_pcm_lib_malloc_pages() may fail, so let's check its status and
return its error code upstream.

Signed-off-by: Kangjie Lu <k...@umn.edu>
---
 sound/soc/intel/atom/sst-mfld-platform-pcm.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c 
b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
index afc559866095..91a2436ce952 100644
--- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c
+++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
@@ -399,7 +399,13 @@ static int sst_media_hw_params(struct snd_pcm_substream 
*substream,
                                struct snd_pcm_hw_params *params,
                                struct snd_soc_dai *dai)
 {
-       snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
+       int ret;
+
+       ret =
+               snd_pcm_lib_malloc_pages(substream,
+                               params_buffer_bytes(params));
+       if (ret)
+               return ret;
        memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
        return 0;
 }
-- 
2.17.2 (Apple Git-113)